Expanding storage bags

Patent metadata

Field	Value
Publication number	US-11498308-B2
Application number	US-202017624810-A
Country	US
Kind code	B2
Filing date	Jul 13, 2020
Priority date	Jul 18, 2019
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A thermoplastic bag includes raised rib-like elements that allow the thermoplastic bag to expand. The thermoplastic bag further includes side seals having rib-like elements that allow the side seals to expand. Additionally, in one or more implementations, the thermoplastic bag includes one or more of a material formulation, a density of raised rib-like elements, a height of raised rib-like elements, or land areas that provide the raised rib-like elements with a reduced rebound ratio.

First claim

We claim:

1. A thermoplastic bag, comprising:
first and second sidewalls comprising a thermoplastic material;
the first and second sidewalls comprising a first side edge, an opposite second side edge, a bottom edge, and an opening along respective top edges;
a closure mechanism that provides for selective closing of the top edges;
a first side seal extending along the first side edge; and
a second side seal extending along the second side edge;
raised rib-like elements formed in the first and second sidewalls and the first and second side seals;
wherein the raised rib-like elements formed in the first and second side seals provide the first and second side seals with an ability to expand.

2. The thermoplastic bag as recited in claim 1 , wherein the first and second side seals have a width between 0.50 mils and 5.0 mils.

3. The thermoplastic bag as recited in claim 1 , wherein the raised rib-like elements are arranged in a pattern of diamonds.

4. The thermoplastic bag as recited in claim 1 , wherein the raised rib-like elements are arranged in a checkboard pattern.

5. The thermoplastic bag as recited in claim 1 , wherein the thermoplastic bag comprises a food storage bag.

6. The thermoplastic bag as recited in claim 1 , wherein the closure mechanism comprises a zipper closure.

7. The thermoplastic bag as recited in claim 1 , wherein the thermoplastic material comprises linear low density polyethylene and low density polyethylene.

8. The thermoplastic bag as recited in claim 7 , wherein the thermoplastic material comprises between 20 percent and 80 percent linear low density polyethylene.

9. The thermoplastic bag as recited in claim 8 , wherein the thermoplastic material comprises between 30 percent and 60 percent linear low density polyethylene.

Assignees

• Glad Products Co

Inventors

• Ferracane Dean
• Rusnak John

Classifications

• B31B70/005

  involving a particular layout of the machinery or relative arrangement of its subunits · CPC title

• B65D33/2508 Primary

  using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor · CPC title

• B32B3/30 Primary

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title

• B32B27/36

  comprising polyesters · CPC title

• B32B2439/46

  Bags · CPC title